Shift Registers

Draw the schematic diagram for a five-bit serial-in/serial-out shift register circuit, and be prepared to give a brief explanation of how it functions.

Draw the necessary connecting wires between flip-flops so that serial data is shifted from right to left instead of left to right as you may be accustomed to seeing in a shift register schematic:

Be sure to also note where data enters this shift register, and where data exits.

Explain how a shift register circuit could be built from D-type flip-flops with the ability to shift data either to the right or to the left, on command. I’m not necessarily asking for a schematic diagram so much as I’m looking for an explanation of how such a circuit might be built. Of course, if your best way of presenting your idea is to draw a schematic diagram, go ahead!